Originally Posted by
rtm904
Sorry, I just saw your reply to AeroFox87. Your comment re: spindle length being specific to the crankset seems to be my dilemma. The particular crankset I'm using seems to need to move in about 8mm (I have a 122.5mm spindle), so I am guessing I need to get a 107mm spindle to get the right chainline. I apologise for the confusion! Randall
Assuming the bottom brackets and spindles you have are symmetrical (centered on the bike frame, without an offset to either side), then you have the math right. You'll need a 16mm shorter spindle to move the crank inboard by 8mm.